xref: /illumos-gate/usr/src/lib/libxcurses2/src/libc/xcurses/vw_print.c (revision 7a6d80f1660abd4755c68cbd094d4a914681d26e)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 1995-1998 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 /* LINTLIBRARY */
28 
29 /*
30  * vw_print.c
31  *
32  * XCurses Library
33  *
34  * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
35  *
36  */
37 
38 #if M_RCSID
39 #ifndef lint
40 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/vw_print.c 1.3 "
41 "1995/08/30 19:37:28 danv Exp $";
42 #endif
43 #endif
44 
45 #include <private.h>
46 #include <stdarg.h>
47 
48 int
49 vw_printw(WINDOW *w, char *fmt, va_list ap)
50 {
51 	int	size = BUFSIZ;
52 	char	*buffer;
53 	int	n, rv;
54 
55 	buffer = (char *)malloc(size);
56 	if (buffer == NULL)
57 		return (ERR);
58 
59 	/* CONSTCOND */
60 	while (1) {
61 		n = vsnprintf(buffer, size, fmt, ap);
62 		if (n < size)
63 			break;
64 		size *= 2;
65 		buffer = (char *)realloc(buffer, size);
66 		if (buffer == NULL)
67 			return (ERR);
68 	}
69 	va_end(ap);
70 	rv = waddnstr(w, buffer, -1);
71 	free(buffer);
72 	return (rv);
73 }
74